Burner pot



Feb. 4, 1947. B, HAYTER 2,415,098

BURNER POT Filed April 8, 1944 I 1 j 3M29955351221"@223 fly] U I O O G0M7 I yew/a) .Bruce flayier centrally apertured-flame ring I0.

Patented Feb. 4,

2,415,098 v BURNER ro'r Bruce Hayter, Santa Fe,

Devices, Santa Fe, ship of Illinois N. Mex., asslgnor to on N. Mex" alimited-partner- Application April 8, 1944, Serial No. 530,117

11 Claims. (01. 158-91) My invention relates to an improvement in pottype burners and has for one purpose to provide improved means forhydrocarbon burner.

Another purpose is to provide improved means for supplying secondary airto the mixture of vaporized hydrocarbon and primary air, in ahydroxylating, pot type burner.

Another purpose is to obtain silent combustion.

Other purposes will appear from time to time in the course of thespecification and claims.

My invention is illustrated more or less dia grammatically in theaccompanying drawing,

wherein:

Figure l -is a vertical axial section of an embodiment of my invention;

Figure 2 is a similar partial section on an enlarged scale; and

delivering air to a liquid 1 .Figure 3 is a similar partial sectionthrough a variation.

Like parts are indicated by like characters throughout the specificationand drawing.

Referring to the drawing, i generally indicates an outer housing havinga plurality of feet 2 between which are air inflow spaces 5. The housingis partly closed by a horizontal partition 4 centrally apertured as atE. t is an angle ring which receives the upper outwardly extendingflange 8 of the burner pot i. a indicates an upper portion of thehousing 6, which serves as a combustion chamber, or a heat radiatingmember. Any suitable draft means, not herein shown, may be provided fordisposing of the heated gases and by-products of combustion. The pot lincludes a shoulder portion 36 which is shown as lying in a planegenerally perpendicular to the axis of the pot. The shoulder portionterminates in a cylindrical pot portion 3|, preferably coaxial with theaxis of the lower pot portion 1. The cylindrical portion 3! terminatesin the flange 8.

One end of the pot is partially closed by a The pot is shown as having aslightly concave bottom or closed end it which is continuous with andclosest the end of the generally cylindrical side wall l2, the minimumdiameter part of the pot which is provided with a plurality of primaryair inlet apertures 13, circumferentially spaced about the wall portion#2 and located at various distances above the pot bottom. Located above,or

beyond the lowest of the primary air inlet apertures I3 is a centrallyapertured pilot baffle ring H supported on any suitable pins or supportsIS. A liquid fuel is supplied to the pot along the pipe l6, the rate offlow being controlled by any However, it will be understood thatanysuitable control means, manual or automatic, maybe provided forvarying the rate of flow of liquid fuel along the pipe l6 or formaintaining a uniform rate of flow, when a, uniform rate is desired. Itwill be understood that whereas I have shown a vertically axised pot,the pot may be horizontally axised or the axis may be variously inclinedin relation to the vertical.

It will be understood that in pot type burners of the present type, aliquid hydrocarbon is vaporized by the heat of combustion taking placein or above the pot. The liquid hydrocarbon is admitted to the interiorof the pot and is initiallypartially vaporized by the heat ofhydroxylation taking place in the pot. As the liquid hydrocarbon isvaporized in the pot, it rises and is surrounded by a film of secondaryair. The radiant heat from this combustion supplies the remainder of theadditional heat necessary to vaporize all of the liquid hydrocarbon.There is a differentiation in action between the s-o-called primary airand the so-called secondary air admitted to the interior of the pot.With reference to the present structure,'the air entering through theprimary apertures l3 has a different action than the air enteringthrough the secondary apertures 24 which are located in thecircumferential pot wall portion 3!. Ad of the oxygen in the airentering through the primary apertures I3 is fully consumed in theprocess of hydroxylation. The oxygen in the air entering through thesecondary apertures 24 is only partially consumed, but all of thevaporized hydrocarbons surrounded by the secondary air are entirelyconsumed,

When fuel is being supplied to the pot for a high fire, combustiontakesplace at a level debustion. I employ for example the single row ofsecondary air inlets 24 which are made to direct ietsof air upwardly andinwardly toward the axis of the pot, by the employment of additionalapertures 33 in the wall portion 30, which direct impinging jets ofeir,against the jets passing walls 30a and 3la. In the wall 3la I provide arow of secondary air inlet apertures 320, shown as is indicated at Ihaving axes inclined toward the open end of the pot. In the wall 30a Iprovide a row of inlet apertures 33a. The wall 30a is inclined and theaxes of the apertures 33a are shown as perpendicular to the wall 30a.The result is a projection of jets of air toward the apertures 32a.

It will be understood that, in connection with the forms of Figs. 2 and3, the inlets 32 and 32a may have, at choice, axes perpendicular to theaxis of the pot or inclined toward the open end of the pot. An advantageof the form of Fig. 3 is that tilting the axes of the apertures 83a isunnecessary, since the wall 304; may be given its final form by adownward thrust against the upper edge of the pot, or by any suitableforming.

step. Both forms have this advantage: that the convergence between twosets of jets of inflowing secondary air takes place very close to theinner faceof the'pot.

It will be realized that whereas I have described and shown a practicaland operative device, nevertheless many changes may be made in the size,shape, number and disposition of parts without departing from the spiritof my invention. I therefore wish my drawing and description to be takenas in a broad sense illustrative or diagrammatic, ratherthan as alimitation to my precise showing.

The use and operation of the invention are as follows: a

In pot type liquid hydrocarbon burners it is highly important to provideanadequate supply of secondary air to a primary mixture in such afashion that combustion noises are substantially cylindrical end wallportion and an intermediate wall portion connecting said cylindrical endwall portion with the side wall of the pot, each said wall portionhaving a plurality of secondary air inlet apertures, the axes ofcorresponding apertures of said two wall portions converging inside thepot.

.2. In a burner pot for pot type burners, a pot member having acircumferential side wall and a closed end wall, the opposite end of thepot being open, the side wall having a plurality of primary air inletapertures circumierentially spaced thereabout, said pot having anoutwardoffset adjacent its open end, including a generally cylindricalend wall portion and an intermediate wall portion connecting saidcylindrical end wall portion with the side wall of the pot, each saidwall .portion havinga plurality of secondary air inlet apertures, theaxes of corresponding apertures of said two wall portions converging andthe axes of the apertures in the intermediate wall portion beingoutwardly inclined toward the apertures in the'end' portion.

3. In a burner'pot for pot typ burners, a pot member having acircumferential side wall and a closed end wall, the opposite end oi-thepot being'open, the side wall having a plurality of primary air inletapertures circumferentially spaced thereabout, said pot having anoutward ofiset adjacent its open end, including a generally cylindricalend wall portion and an intermediate wall portion connecting saidcylindrical end wall portion with the side wall of the pot, each saidwall portion having a plurality of secondary air inlet apertures, theaxes of corresponding apertures of said two wall portionsconverging, theaxes of the apertures in the intermediate wall portion being outwardlyinclined toward the apertures in the end wall portion and 'the axes ofthe apertures in the end wall portion being inclined toward the open endof the pot.

4. In a burner pot for pot type burners, a pot member having a generallycylindrical circumferential side wall provided with a plurality ofprimary air inlet apertures, and a closed end wall, the opposite end ofthe pot being open, the side, i

ly' from the wall of the pot and which provide an ample supply ofsecondary air at the point of admission. In practice in all the formsshown herein, thereis provided quiet and efficient combustion, with anample supply of air at the base of the jet. The impingement of the twoinclined currents of air holds down the. speed of flow of the jets andprevents any tendency for the jets to burn away from the inner faceofthe pot. I

A primary cause of noisy combustion is the tendency of the base of theflame to leavethe immediate vicinity of the orifice through which theair enters. By providing impinging jets I control or limit the speed ofthe air jet flow, and at the same time insure an ample supply ofsecondary air at the base of the flame, adjacent theinner face of thepot wall.

I claim:

1.-In a burner pot for pot type burners,'a pot member having acircumferential side wall and a. closed end wall, the opposite end ofthe pot being open, the side wall having a plurality of wall having anoutwardly extending portion terminating in a generally cylindrical endportion, the side wall of the pot having secondary air inlet aperturesin the outwardly extending portion and in the cylindrical end portion,formed and adapted to direct converging jets into the pot.

5. In a burner pot for pot type burners, a pot member having a generallycylindrical circumferential side wall provided with a plurality ofprimary air inlet apertures, and a closed end wall, the opposite end ofthe pot being open, the

sidewall having an outwardly'extending portion terminatingin agenerallycylindrical portion at the open end of the pot, the side wallof the pot having secondary air inlet apertures in the outwardlyextending portion and in the cylindrical end portion, the axes of theapertures in the said two portions intersecting inside the pot.

6. In a burner pot for pot type burners,'a pot member having a generallycylindrical circum ferential side wall provided with a plurality ofprimary air inlet apertures, and a closed end wall, the opposite end ofthe pot being open, the side wall having an outwardly extending portionterminating in a generally cylindrical portion at the open end of thepot, the side wall of the pot having secondary air inlet apertures inthe outwardly extending portion and in the cylindrical end portion, theaxes of the apertures in the said two portions intersecting closely adjacent the inner face of said cylindrical end portion.

7. In a burner pot for pot type burners, a pot member having a generallycylindrical circumferential side wall provided with a plurality ofprimary air inlet apertures, and a closed end wall, the opposite end ofthe pot being open, the side wall having an outwardly extending portionterminating in a generally cylindrical portion at the open end of thepot, the side wall of the pot havin secondary air inlet apertures in theoutwardly extending portion and in the cylindrical end pore tion, said.outwardly extending portion being inclined outwardly and away from theopen end of the pot.

8. In a burner pot for pot type burners, a pot member having a generallycylindrical circumferential side wall provided with a plurality ofprimary air inlet apertures, and a closed end wall, the opposite end ofthe pot being open, the side wall having an outwardly extending portionterminating in a generally cylindrical portion at the open end of thepot, the side wall of the pot having secondary air inlet apertures inthe outwardly extending portion and in the cylindrical end portion, saidoutwardly extending portion being inclined outwardly and away from theopen end of the pot, the axes of the secondary air inlet apertures insaid outwardly extending portion being generally perpendicular to saidoutwardly extending portion, and converging with the axes of the airinlets in the cylindrical end portion closely adjacent the inner face ofsaid cylindrical end portion.

9. In a burner pot for pot type burners, a p t member having acircumferential generally cylindrical side wall and a closed end wall,the opposite end of the pot being open, the side wall including twogenerally cylindrical portions of different diameter and a connectingwall portion therebetween, the cylindrical portion of maximum diameterbeing located adjacent the open end of the pot and having therein aplurality of circumferentially spaced secondary air inlet apertures, thecylindrical portion of smaller diameter having therein a plurality ofprimary air inlet apertures spaced circumferentially thereabout, andsaid connecting wall portion having therein additional secondary airinlet apertures adapted to deliver impinging Jets of air toward the jetsdelivered inwardly through said first mentioned secondary air inletapertures.

10. In a burner pot for pot type burners, a pot I member having acircumferential generally cylindrical side wall and a closed end wall,the opposite end of they pot being open, the side wall including twogenerally cylindrical portions of difierent diameter and aconnecting'wall portion 'therebetween, the cylindrical portion ofmaximum diameter being located adjacent the open end of the pot andhaving therein a plurality of circumferentiall'y spaced secondary airinlet apertures, the cylindrical portion of smaller diameter havingtherein & plurality of primary air' inlet apertures spacedcircumierentially thereabout, and said connecting wall portion havingtherein additional secondary airinlet apertures adapted to deliverimpinging jets of air outwardly toward the jets delivered inwardlythrough said first mentioned secondary air inlet apertures.

11. In a burner 'pot for pot type burners, a pot member having acircumferential generally cylindrical side wall and a closed end wall,the opposite end of the pot being open, the side wall including twogenerally cylindrical portions of different diameter and a connectingwall portion therebetween, the cylindrical portion of maximum diameterbeing located adjacent the open end of the pot and having therein a,plurality of ci-rcumferentially spaced secondary air inlet apertures,the cylindrical portion of smaller diameter having therein a, pluralityof primary air inlet apertures spaced circumferentially thereabout, andsaid connecting wall portion having therein additional secondary airinlet apertures adapted to deliver impinging jets of air outwardlytoward the jets delivered inwardly through said first mentionedsecondary air inlet apertures, said connecting wall portion beingupwardly and inwardly inclined toward the open end or the pot. BRUCEHAYTER.

REFERENCES CITED The following references are of record in the

